EP0304116A1 - Procédé pour la réalisation d'un fil ou câble supraconducteur - Google Patents
Procédé pour la réalisation d'un fil ou câble supraconducteur Download PDFInfo
- Publication number
- EP0304116A1 EP0304116A1 EP88201686A EP88201686A EP0304116A1 EP 0304116 A1 EP0304116 A1 EP 0304116A1 EP 88201686 A EP88201686 A EP 88201686A EP 88201686 A EP88201686 A EP 88201686A EP 0304116 A1 EP0304116 A1 EP 0304116A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- wire
- carrier body
- precipitate
- superconductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000002244 precipitate Substances 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000012442 inert solvent Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 238000007669 thermal treatment Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 229910002651 NO3 Inorganic materials 0.000 description 4
- 150000003891 oxalate salts Chemical class 0.000 description 4
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910002480 Cu-O Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 150000001860 citric acid derivatives Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910009203 Y-Ba-Cu-O Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- GXUARMXARIJAFV-UHFFFAOYSA-L barium oxalate Chemical compound [Ba+2].[O-]C(=O)C([O-])=O GXUARMXARIJAFV-UHFFFAOYSA-L 0.000 description 1
- 229940094800 barium oxalate Drugs 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 230000005493 condensed matter Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- QYCVHILLJSYYBD-UHFFFAOYSA-L copper;oxalate Chemical compound [Cu+2].[O-]C(=O)C([O-])=O QYCVHILLJSYYBD-UHFFFAOYSA-L 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- IBSDADOZMZEYKD-UHFFFAOYSA-H oxalate;yttrium(3+) Chemical compound [Y+3].[Y+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O IBSDADOZMZEYKD-UHFFFAOYSA-H 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/20—Permanent superconducting devices
- H10N60/203—Permanent superconducting devices comprising high-Tc ceramic materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/01—Manufacture or treatment
- H10N60/0268—Manufacture or treatment of devices comprising copper oxide
- H10N60/0296—Processes for depositing or forming copper oxide superconductor layers
- H10N60/0324—Processes for depositing or forming copper oxide superconductor layers from a solution
Definitions
- the invention relates to a method of manufacturing a wire or cable of a superconductive material of the oxidic type.
- the superconductive oxidic material as such is known from various publications. Reference may be made, inter alia , to the first publication in this field by J. G. Bednorz and K.A. Müller in Zeitschrift für Physik B, Condensed Matter 64 , pp . 189-193 of September, 1986. In this first publication is described the superconductive character of substances of the La-Ba-Cu-O system at comparatively high Tg. It is known from later publications, for example, Physical Review Letters 58 , No. 9, pp .
- a first object of the invention is a method of preparing in which fewer process steps are necessary and in which in particular no separate first process step is necessary in which pellets, cylinders or other moulded bodies of the superconductive material are manufactured.
- a second object is a method of manufacturing wires and cables in which a comparatively small quantity of the superconductive material suffices.
- a further object relates to a method of manufacturing superconductive wires and cables in which the physical properties of the manufactured product, for example, tensile strength, thermal conductivity, normal electric conductivity, coefficient of expansion and the like can be selected and realised at will in an efficacious and simple manner.
- a wire-shaped inert carrier body is provided with a thin layer of a solution which comprises an inert solvent in which chemical compounds of the composing elements of the superconductive material have been dissolved, as well as a reagent which is soluble in the solvent and forms aprecipitate with the said compounds, the solvent is removed and the carrier body with the layer of the formed precipitate present thereon is subjected to a thermal treatment, the precipitate being converted into a layer of a superconductive material.
- An aqeous solution is preferably used of water-soluble salts of the composing elements, for example, an aqueous solution which comprises Ba (or Sr) nitrate, La (or Y) nitrate and Cu-nitrate in quantities which correspond to the atomic weight percentages of the elements in question is the superconductive material.
- a water-soluble reagent in particular oxalic acid, citric acid or a water-soluble oxalate, citrate or carbonate is preferaly added directly to this solution.
- the oxalates, and citrates or carbonates, respectively, of the composing elements are formed in the thin layer of the aqueous solution which do not dissolve in the reaction medium and form a thin layer of precipitate.
- the solvent is removed either as a result of spontaneous evaporation, or by evaporation at elevated temperature and/or by using a dry, inert gas atmosphere.
- the subsequent thermal treatment in which the oxalates and citrates or carbonates, respectively, decompose and the product is fixed to form the superconductive oxidic material takes place at approximately 900-1100°C in an oxygen-containing atmosphere.
- the wire-shaped carrier body used in the method according to the invention is inert. This means that no or no noteworthy interaction occurs with the thin layer of superconductive material. In fact, if interaction does take place, the composition of the superconductive layer can be changed to form a non-active compound. Another requirement which is imposed upon the carrier body is that it can withstand the temperature at which the firing mentioned hereinbefore and optionally sintering take place.
- the advantage of the invention is that the wire-shaped inert carrier body is decisive of notably the mechanical and physical properties of the manufactured wire or cable. A variety of desired properties of the final product - superconductive wire or cable - can simply be realised by a suitable choice of the material and the configuration of the carrier body. Examples of such properties are tensile strength, flexibility, thermal conductivity, electrical conductivity, specific gravity.
- the carrier body may furthermore comprise auxiliary members, for example, connectors, splitters, terminations and the like which are desired for practical applications.
- the carrier body may also comprise one or more ducts or bores which may be used for internal cooling of the wire or cable by means of liquid nitrogen flowing through the ducts. If desired, electric or optical conductors or, for example, reinforcing fibres may be accomodated in the ducts or bores.
- a suitable configuration which is desired for the final product for example, a spiral-like winding of the carrier body, already in the carrier body.
- an inert carrier body is used which comprises one or more wires of Ag or Au or comprises a core covered with a layer of Ag or Au.
- Such a core for example, comprises one or more threads of a non-noble metal such as Cu, Ni, Al and stainless steel or of quartz. Due to its excellent electrical conductivity the use of a Cu core is advantageous.
- the method according to the invention is characterized in that an inert carrier body is used comprising one ore more wires of Ag or Au or comprising a core covered with a layer of Ag or Au, which carrier body is provided, by means of spraying or atomising process, with a thin layer of an aqueous solution of water-soluble salts of the composing elements and with a reagent which forms a precipitate with the salts, the solvent is removed and the fibre is heated in an oxygen atmosphere, the formed precipitate being converted into a thin layer of a superconductive material of the oxidic type.
- the spraying or atomising process By using the spraying or atomising process, a very uniform thin layer is provided over the whole circumference of the wire-shaped carrier body.
- the inert carrier body used does not show any interaction with the provided superconductive layer of oxidic material.
- Reference numeral 1 in the figure denotes a storage reel comprising an Ag wire 2.
- the Ag wire 2 passes, via guide rollers 3, a liquid atomiser 4.
- the liquid atomiser 4 which is shown very diagrammatically in the Figure comprises a holder 5 in which a liquid 6 to be atomised is present which is atomised on Ag wire 2 via rise pipe 7 and nozzle 8.
- a precipitate of yttrium oxalate, barium oxalate and copper oxalate is formed in the liquid layer provided on the Ag wire 2.
- the liquid layer is dried in air and Ag wire 2 is then passed through a furnace 9 which has an inlet aperture 10 and an outlet aperture 11 for oxygen gas.
- Ag wire 2 is heated in the oxygen atmosphere of furnace 9 to a temperature of approximately 1100°C.
- the Ag wire 2 comprising a superconductive layer is reeled on a storate reel 13 via guide rollers 12.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8701890 | 1987-08-12 | ||
NL8701890 | 1987-08-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0304116A1 true EP0304116A1 (fr) | 1989-02-22 |
Family
ID=19850441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88201686A Withdrawn EP0304116A1 (fr) | 1987-08-12 | 1988-08-04 | Procédé pour la réalisation d'un fil ou câble supraconducteur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0304116A1 (fr) |
JP (1) | JPS6471023A (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0357910A2 (fr) * | 1988-08-29 | 1990-03-14 | kabelmetal electro GmbH | Matériau allongé supraconducteur d'un tuyau ondulé revêtu |
BE1003160A5 (fr) * | 1988-11-03 | 1991-12-17 | Dour Metal Sa | Incorporation de filaments ceramiques long dans une matrice metallique en vue d'obtenir un fil supraconducteur composite. |
EP0503746A2 (fr) * | 1987-03-13 | 1992-09-16 | Kabushiki Kaisha Toshiba | Fil supraconducteur et procédé pour sa fabrication |
WO1998043253A1 (fr) * | 1997-03-25 | 1998-10-01 | Nordic Superconductor Technologies A/S | Revetement d'un supraconducteur |
US7296419B2 (en) * | 2002-04-05 | 2007-11-20 | Sumitomo Electric Industries, Ltd. | Cooling method of superconducting cable line |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4893364A (en) * | 1988-05-23 | 1990-01-16 | Keeler Francis R | Water-recycling shower |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0180936A2 (fr) * | 1984-11-07 | 1986-05-14 | Asea Brown Boveri Aktiengesellschaft | Procédé de fabrication d'un faisceau de fibres supraconductrices |
-
1988
- 1988-08-04 EP EP88201686A patent/EP0304116A1/fr not_active Withdrawn
- 1988-08-09 JP JP63197278A patent/JPS6471023A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0180936A2 (fr) * | 1984-11-07 | 1986-05-14 | Asea Brown Boveri Aktiengesellschaft | Procédé de fabrication d'un faisceau de fibres supraconductrices |
Non-Patent Citations (4)
Title |
---|
ADVANCED CERAMIC MATERIALS, vol. 2, no. 3B, 1987, pages 388-400, Westerville, OH, US; R.W. McCALLUM et al.: "Problems in the production of YBa2Cu3Ox superconducting wire" * |
APPLIED PHYSICS LETTERS, vol. 51, no. 3, 20th July 1987, pages 203-204, American Institute of Physics, New York, US; S. JIN et al.: "High Tc superconductors - composite wire fabrication" * |
JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 26, no. 4, part 2, 20th April 1987, pages L454-L455, Tokyo, JP; M. HIRABAYASHI et al.: "Structure and superconductivity in a new type of oxygen deficient perovskites Y1Ba2Cu3O7" * |
ZEITSCHRIFT FÜR PHYSIK B - condensed matter 64, September 1986, pages 189-193, Springer-Verlag, Berlin, DE; J.G. BEDNORZ et al.: "Possible high Tc superconductivity in the Ba-La-Cu-O system" * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0503746A2 (fr) * | 1987-03-13 | 1992-09-16 | Kabushiki Kaisha Toshiba | Fil supraconducteur et procédé pour sa fabrication |
EP0503746A3 (en) * | 1987-03-13 | 1992-12-30 | Kabushiki Kaisha Toshiba | Superconducting wire and method of manufacturing the same |
EP0357910A2 (fr) * | 1988-08-29 | 1990-03-14 | kabelmetal electro GmbH | Matériau allongé supraconducteur d'un tuyau ondulé revêtu |
EP0357910B1 (fr) * | 1988-08-29 | 1998-09-16 | Alcatel | Procédé de fabrication d'un matériau allongé supraconducteur d'un tuyau ondulé revêtu |
BE1003160A5 (fr) * | 1988-11-03 | 1991-12-17 | Dour Metal Sa | Incorporation de filaments ceramiques long dans une matrice metallique en vue d'obtenir un fil supraconducteur composite. |
WO1998043253A1 (fr) * | 1997-03-25 | 1998-10-01 | Nordic Superconductor Technologies A/S | Revetement d'un supraconducteur |
US6223418B1 (en) | 1997-03-25 | 2001-05-01 | Nordic Superconductor Technologies A/S | Coating of a superconductor |
US7296419B2 (en) * | 2002-04-05 | 2007-11-20 | Sumitomo Electric Industries, Ltd. | Cooling method of superconducting cable line |
Also Published As
Publication number | Publication date |
---|---|
JPS6471023A (en) | 1989-03-16 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL SE |
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17P | Request for examination filed |
Effective date: 19890811 |
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17Q | First examination report despatched |
Effective date: 19910731 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19911211 |